Gaseous fuel



JAMES R. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND

OHIO, ASSIGNJORS TO CARBO-OXYGEN COMPANY, OF

A CORPORATION OF DELAWARE JOHN HARRIS, OF LAKEWOOD, PITTSBURGH,PENNSYLVANIA,

GASEOUS FUEL.

No Drawing.

To all whom it may concern:

Be it known that we, (1) JAMES R. Ross, (2) JOHN HARRIS, citizens oftheUnited States, residing at (1) Edgeworth, (2) Lakewood, in the county of(1) Allegheny, (2) Cuyahoga; and State of (1) Pennsylvania, (2) Ohio,have invented a certain new and useful Improvement in Gaseous Fuel, ofwhich the following is a full,'clear, and exact description. I

This invention relates to gaseous fuel, and more particularly to a fuelwhich is especially adapted for the purpose of cutting metals with greatrapidity, Where extreme cleanness of cutting is not essential. A use forwhich our gas is particularly well suited is for the cutting of scrapiron.

We obtain a gas having the above desirable chara cteristicsby mixingwith hydrogen as a combustible base, by-product coke-oven gas and butanein the proportions of from 2%% to 12%% by volume each of such byproductcoke-oven gas and such propane to the hydrogen constituent. Theby-productcoke-oven gas has nearly the same flame temperature as thehydrogen, and the mixture of the butane therewith makes the temperatureof the combined gases in excess of that obtained by the combustion ofhydrogen alone and equal to at least 3200 C. Furthermore, the by-productcoke-oven gas is also readily obtainable as a source of gas for cuttingpurposes in steel mills. Thegaseous mixture produces'within the burninghydrogen a visible cone which enables the operatorto adjust theproportions of the gases and of the combustion-supporting oxygen as maybe necessary, as well as to apply the flame in the most advantageousmanner to the work.

Both the volume of the flame and the heat units produced by thecombustion of the mixture are greater than are produced by thecombustion of hydrogen alone, but are lower than usually required foroperating on heavy masses of metal and for cutting castiron and steeland corroded, dirty and slaggy iron and steel; However, our gaseousmixture is capable of cutting with much greaterralpidity than can beaccomplished aving 'such higher carbon con-- by gases tent.

Taking Kopperss by-product coke-oven Specification of Letters Patent.

Patented Jan. 24, 1922.

' Application filed December 26, 1919. Serial No. 347,449.

gas as a type, the average analysis of the same is as follows:

CO 2. 6 Illuminants 4. 3 Oxygen 0.2

O 6. 3 Hydrogen 46.3

H, 35.0 Nitrogen 5. 3 B. T. U. 630 Cu. ft. of oxygen required forcombustion of a cu. ft. of gas 1. ()9

According to Richards on Metallurgical Calculations, published in 1908,and with the by-product coke-oven gas of approximately the analysisabove set forth, the flame temperature produced by the combustion of theabove described gaseous mixture will be about 3200 C., and thevariations in the percentages of the said gases willcause ap proximatelythe following variations in the net B. T..U. per cu. ft. ofmixture andin the cubic feet of oxygen required for the combustion of a cubic footof such mixture:

No. 1v mixture, 95% H. with 2%% each of by-product coke-oven gas andbutane; net B. T. U.s373; cu. ft. of oxygen .662.

No; 2 mixture, 75% H. with 12%%- each of by-products coke-oven gas andbutane; net B. T. U.s 692; cu.-ft. of oxygen 1,312.

Having thus described our invent-ion, what we claim is 1. A gas forcutting, welding and heating purposes consisting of a mixture ofby-product coke gas and butane with hydrogen in the proportions otfrom2}% to 125% by volume of each of by-product coke gas and butane tohydrogen.

2. A gas for cutting, welding and heating purposes consisting of amixture of by-product coke-oven gas and butane with hydrogen inproportions not substantially less than 5% by'vol-ume of such combinedgases to the hydrogen and not materially more than 25% of such combinedgases to the hydrogen, the by-product coke-oven gas and butane beingpresent in the proportions of at least 2. each in such mixture.

In testimony whereof we hereunto afiix our signatures.

JAMES .R. ROSE. JOHN HARRIS.

